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**a** on
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A model rocket is launched straight upward

with an initial speed of 51.6 m/s. It accelerates with a constant upward acceleration of

1.96 m/s2 until its engines stop at an altitude

of 230 m.

What is the maximum height reached by

the rocket? The acceleration of gravity is

9.81 m/s2.

Answer in units of m

When does the rocket reach maximumheight?

Answer in units of s

How long is the rocket in the air?

Answer in units of s